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Preparation method of alkali-efflorescence-resistant and fading-resistant colorful steel slag pavior brick

A technology of pavement bricks and anti-efflorescence agents, which is applied in the field of building materials, can solve problems such as claim disputes, frosting, and whitening of cement products, and achieve the effects of reducing production costs, alleviating whitening, and improving wear resistance

Active Publication Date: 2012-11-21
宝武环科(湛江)资源循环利用有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the pavement bricks are formed, in order to ensure the strength of the cement products, water is often poured on the cement products for maintenance. At this time, the cement products will appear whitening, frosting, fading and other phenomena. In severe cases, the products cannot be sold or claim disputes often occur

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1: Preparation of colored steel slag pavement bricks comprising a substrate layer and a surface material layer

[0021] (1) Add 150kg of BPN50 steel slag sand, 100kg of BPN100 steel slag sand, 570kg of gravel and 180kg of cement into the mixer to form the raw material for the base material layer of the steel slag pavement brick, add 60 kg of water, and fully stir to make the base material layer mixture;

[0022] (2) Weigh 0.75kg of pigment, 0.12kg of anti-efflorescent agent and 24.25kg of cement, stir and mix them fully in the dry powder mixer, then weigh 50kg of BPN25 steel slag sand and 25kg of quartz sand, and add them to the mixer together with the previous mixed sample , to form the surface material layer raw material of steel slag pavement bricks, add 7.5kg of water, fully stir, and make the surface material layer mixture; free acid is less than 0.5% in the anti-efflorescence agent, moisture is less than 1.5%, stearic acid Sodium (C 18 h 35 NaO 2 ) comp...

Embodiment 2

[0027] Example 2: Preparation of colored steel slag pavement bricks comprising a substrate layer and a surface material layer

[0028] (1) Add 160kg of BPN50 steel slag sand, 200kg of BPN100 steel slag sand, 450kg of gravel and 180kg of cement into the mixer to form the base material layer raw material of the steel slag pavement brick, add 65kg of water, and fully stir to make the base material layer mixture;

[0029] (2) Weigh 0.85kg of pigment, 0.125kg of anti-efflorescent agent and 25kg of cement, fully stir and mix in the dry powder mixer, then weigh 50kg of BPN25 steel slag sand and 37.5kg of quartz sand, and add them to the mixer together with the previous mixed sample , to form the surface material layer raw material of steel slag pavement bricks, add 7.5kg of water, fully stir, and make the surface material layer mixture; free acid is less than 0.5% in the anti-efflorescence agent, moisture is less than 1.5%, stearic acid Sodium (C 18 h 35 NaO 2 ) composition greate...

Embodiment 3

[0034] Example 3: Preparation of colored steel slag pavement bricks comprising a substrate layer and a surface material layer

[0035] (1) Add 150kg of BPN50 steel slag sand, 300kg of BPN100 steel slag sand, 270kg of gravel and 180kg of cement into the mixer to form the base material layer raw material of the steel slag pavement brick, add 68kg of water, and fully stir to make the base material layer mixture;

[0036] (2) Weigh 1kg of pigment, 0.14kg of anti-efflorescent agent and 25kg of cement, fully stir and mix in the dry powder mixer, then weigh 50kg of BPN25 steel slag sand and 50kg of quartz sand, and add them to the mixer together with the previous mixed sample to form The surface material layer raw material of steel slag pavement bricks is added with 7.5kg of water, fully stirred to make the surface material layer mixture; free acid is less than 0.5%, moisture is less than 1.5% in the anti-efflorescence agent, sodium stearate ( C 18 h 35 NaO 2 ) composition greater...

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Abstract

The invention discloses a preparation method of an alkali-efflorescence-resistant and fading-resistant colorful steel slag pavior brick. The preparation method comprises the following steps of: mixing steel slag sand, cement and a broken stone according to a proportion, adding water and stirring; mixing and stirring pigment, an alkali- efflorescence resistant agent and the cement, mixing the mixture, the steel slag sand and quartz sand, adding water and stirring; arranging a bottom material layer mixing material at the bottom of a mold, arranging a surface material layer mixing material on the bottom material layer mixing material;and pressing and molding at a normal temperature by a molding machine, wherein the mass ratio of the bottom material layer mixing material to the surface material layer mixing material is 5:1 to 3: 1; an exciting force of the molding machine ranges from 100 to 110 KN; and the molding time of the molding machine ranges from 20 to 25 s. The pavior brick produced by the preparation method provided by the invention is molded at the normal temperature, an organization structure is compact, active substances after molding are reduced, so that an the alkali efflorescence phenomenon of the pavior brick can be effectively restrained, at the same time, basic performances of a product, such as strength and water permeability are not changed.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a preparation method of colored steel slag pavement bricks which are resistant to efflorescence and discoloration. Background technique [0002] Steel slag pavement bricks are made of steel slag as the main coarse and fine aggregates, properly mixed with natural sand, stone and special aggregates, and cement and steel slag micropowder as the main cementitious materials, after batching, stirring, vibration, pressure molding, etc. Blocks and slabs made of concrete pavement and ground engineering for paving sidewalks, roadways, squares, warehouses, etc. [0003] When producing colored steel slag pavement bricks, there are many problems in coloring. After the pavement bricks are formed, in order to ensure the strength of the cement products, water is often poured on the cement products for maintenance. At this time, the cement products will appear whitening, frosting, f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28B1/54C04B28/00C04B24/08
Inventor 唐欧靖康明邓铁军金振兴帅同杰
Owner 宝武环科(湛江)资源循环利用有限公司